Generation of Radical Species from Cyclohexane-1,2-dione and the Reaction with Olefins: Preparation of 4,5-Dihydro-7(6<i>H</i>)-benzofuranone Derivatives
作者:Masanori Miura、Noriyoshi Arai、Koichi Narasaka
DOI:10.1246/bcsj.71.1437
日期:1998.6
Oxidation of cyclohexane-1,2-dione with ammonium hexanitratocerate(IV) (CAN) generates 2,3-dioxocyclohexyl radical, which reacts with electron-rich olefins to afford the corresponding addition products. The adducts thus generated are converted to 4,5-dihydro-7(6H)-benzofuranone by acid treatment. In addition to cyclohexane-1,2-dione, radical species are also generated from cyclopentane-1,2-dione and
环己烷-1,2-二酮与六硝酸铵 (IV) (CAN) 氧化生成 2,3-二氧代环己基自由基,该自由基与富电子烯烃反应得到相应的加成产物。由此产生的加合物通过酸处理转化为4,5-二氢-7(6H)-苯并呋喃酮。除了环己烷-1,2-二酮外,环戊烷-1,2-二酮和环庚烷-1,2-二酮也会产生自由基。